simple mobile application for automobile dealers -- 2

basic app with good ui. it has to enable automobile dealers and their team to calculate their margin while the deal is live. sales executive will have to enter the final deal in the app while the deal is live. our app shall calculate all margins in it and display live deal to gm/owner. once they are ok with the deal and profit on that particular deal, they might approve it. it clearly helps dealer to track every live deal and ensure proper pricing.